Zipper Slide

ABSTRACT

A zipper slide for sealing a pair of sealing tapes comprises a separating plate separating an inner space of the zipper slide to form an upper guiding slot and a lower guiding slot, a top plate formed above the upper guiding slot, and a tab connected to the top plate. The upper and lower guiding slots are communicated with each other at a rear end of the inner space, and used to guide a first sealing groove of a first sealing tape and a second sealing groove of a second sealing tape so that the first and second sealing grooves are connected with each other at the rear end of the inner space. The separating plate of the zipper slide is extended forward out of a front end of the inner space of the zipper slide to form a sealing end having an inclined surface with a substantially triangle cross-section, which tightly inserts into a slit formed between the first and second sealing grooves. Furthermore, the separating plate is extended rearward to the rear end of the inner space to form a closing end having a predetermined interval in relation to the top plate for guiding the first sealing groove to exactly slide therethrough.

FIELD OF THE INVENTION

The present invention relates to a zipper slide, and more particularly to a zipper slide for sealing a pair of sealing tapes.

BACKGROUND OF THE INVENTION

Referring to FIG. 1, a conventional zipper slide 10 is illustrated. The zipper slide 10 comprises a separating plate 11 separating an inner space of the zipper slide 10, an upper guiding slot 12 formed in the inner space thereof, a lower guiding slot 13 formed in the inner space thereof, a top plate 14 formed above the upper guiding slot 12, and a tab 15 pivotably connected to the top plate 14 for pulling the conventional zipper slide 10. The upper guiding slot 12 and the lower guiding slot 13 are separated from each other by the separating plate 11.

Referring to FIGS. 2 and 3, the conventional zipper slide 10 movably mounted on a pair of conventional sealing tapes 20 is illustrated. The conventional sealing tapes 20 comprises a first sealing tape 21 provided with a first sealing groove 211 and a second sealing tape 22 provided with a second sealing groove 221 adapted to connect with the first sealing groove 211. When the conventional zipper slide 10 is movably mounted on the conventional sealing tapes 20, the first sealing groove 211 of the first sealing tape 21 passes through the upper guiding slot 12 while the second sealing groove 221 of the second sealing tape 22 passes through the lower guiding slot 13. Once the conventional zipper slide 10 is pulled toward an end 201 of the conventional sealing tapes 20 by the tab 15, the upper guiding slot 12 is used to guide the first sealing groove 211 of the first sealing tape 21 while the lower guiding slot 13 is used to guide the second sealing groove 221 of the second sealing tape 22 so that the first and second sealing grooves 211,221 are connected with each other at a communicating portion of the upper guiding slot 12 and the lower guiding slot 13 until the first sealing groove 211 and the second sealing groove 221 of the conventional sealing tapes 20 are completely connected with each other.

However, when the conventional zipper slide 10 is moved forward and close to the end 201 of the conventional sealing tapes 20 prior to complete the connection of the first and second sealing grooves 211,221, a slit 23 is inevitably formed between the first and second sealing grooves 211,221. If the conventional sealing tapes 20 is mounted on an opening portion of a bag (not shown), air or liquid contained in the bag will leak away from the slit 23, a clearance formed between the first sealing grooves 211 and the upper guiding slot 12, and a clearance formed between the second sealing grooves 221 and the lower guiding slot 13. It results in that the conventional zipper slide 10 can not completely seal the first and second sealing grooves 211,221 of the conventional sealing tapes 20 during operation or after use so as to limit the conventional zipper slide 10 to be only applied to the conventional sealing tapes 20 of general bags but not to that of precise bags having an opening portion need to be sealed.

It is therefore tried by the inventor to develop a zipper slide for sealing a pair of sealing tapes to solve the problems existed in the conventional zipper slide.

SUMMARY OF THE INVENTION

A primary object of the present invention is to provide a zipper slide for sealing a pair of sealing tapes, wherein the zipper slide is formed with a sealing end to insert into and seal a slit defined between the pair of the sealing tapes, and at least one clearance formed between at least one sealing grooves of the sealing tapes and at least one guiding slot of the zipper slide so that the zipper slide can be mounted on the sealing tapes of a bag in order to substantially seal the sealing tapes.

To achieve the above and other objects, the zipper slide for sealing the pair of sealing tapes according to a preferred embodiment of the present invention comprises a separating plate separating an inner space of the zipper slide, an upper guiding slot formed in the inner space thereof, a lower guiding slot formed in the inner space thereof, a top plate formed above the upper guiding slot, a bottom plate formed below the lower guiding slot, and a tab pivotably connected to the top plate. The upper guiding slot and the lower guiding slot are separated from each other by the separating plate, and communicated with each other at a rear end of the inner space of the zipper slide. The upper guiding slot is used to guide a first sealing groove of a first sealing tape while the lower guiding slot is used to guide a second sealing groove of a second sealing tape so that the first and second sealing grooves are connected with each other at the rear end of the inner space of the zipper slide. The zipper slide is characterized in that the separating plate is extended forward out of a front end of the inner space of the zipper slide to form a sealing end having an inclined surface with a substantially triangle cross-section, which tightly inserts into a slit formed between the first and second sealing grooves. Furthermore, the separating plate is extended rearward to the rear end of the inner space of the zipper slide to form a closing end having a predetermined interval in relation to the top plate for guiding the first sealing groove to exactly slide therethrough. In another aspect, the sealing end of the separating plate preferably has the inclined surface with an arc configuration, but not limit to the configuration, to tightly and smoothly support the first sealing groove. The triangle cross-section of the inclined surface is preferably selected from an isosceles-triangle cross-section or an equilateral-triangle cross-section which has two equilateral sides with an arc configuration able to be suitably adjusted dependent on the shape of the slit, but not limit to such configuration. Moreover, the top plate and the bottom plate can be extended forward and close to the sealing end of the zipper slide so that the top plate and the bottom plate can be used to press the first sealing groove and the second sealing groove, respectively. It results in that the first sealing groove and the second sealing groove are in contact with the sealing end of the slide zipper to minimize the slit without backward return of the slide zipper so as to increase the sealing reliability between the slide zipper and the sealing tapes.

According to another preferred embodiment of the present invention, a zipper slide comprises a separating plate having a front end extending forward to form a projection (i.e. a sealing end) for inserting into a slit formed between a first sealing groove of a first sealing tape and a second sealing groove of a second sealing tape to prevent leakage from the slit. Furthermore, the zipper slide is extended rearward to form a closing end with a tapered configuration for ensuring the contact between an upper guiding slot and the first sealing groove while ensuring the contact between an lower guiding slot and the second sealing groove so as to prevent any leakage from a communicating portion of the upper guiding slot and the lower guiding slot of the zipper slide.

BRIEF DESCRIPTION OF THE DRAWINGS

The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein

FIG. 1 is an assembled perspective view of a conventional zipper slide;

FIG. 2 is an assembled perspective view of the conventional zipper slide mounted on a pair of conventional sealing tapes;

FIG. 3 is a cross-sectional view of the FIG. 2;

FIG. 4 is an assembled perspective view of a zipper slide according to a first preferred embodiment of the present invention;

FIG. 5 is an assembled perspective view of the zipper slide mounted on a pair of sealing tapes according to the first preferred embodiment of the present invention;

FIG. 6 is a cross-sectional view of the FIG. 5;

FIG. 7 is an assembled perspective view of a zipper slide according to a second preferred embodiment of the present invention;

FIG. 8 is a cross-sectional view of the zipper slide according to the second preferred embodiment of the present invention; and

FIG. 9 is a cross-sectional view of a zipper slide according to a third preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to FIG. 4, a zipper slide 30 according to a first preferred embodiment of the present invention is illustrated. As shown, the zipper slide 30 of the present invention comprises a separating plate 31 separating an inner space of the zipper slide 30, an upper guiding slot 32 formed in the inner space thereof, a lower guiding slot 33 formed in the inner space thereof, a top plate 34 formed above the upper guiding slot 32, and a tab 35 pivotably connected to the top plate 34 for pulling the zipper slide 30 forward or rearward.

Referring still to FIG. 4, the zipper slide 30 is characterized in that the separating plate 31 is extended forward and rearward to elongate its total length. The separating plate 31 is extended forward out of a front end of the inner space (i.e. the upper guiding slot 31) of the zipper slide 30 to form a sealing end 311 having an inclined surface with a substantially triangle cross-section, and the inclined surface of the sealing end 311 may be preferably selected from a planar surface or an arc surface, and more particularly selected from the arc surface, but not limit to such configuration, for the purpose of being tightly in contact with a first sealing groove 211 of a first sealing tape 21 as shown in FIG. 5. When the separating plate 31 is extended forward to form the sealing end 311, a side plate 313 is formed on one side of the separating plate 31, and extended forward to elongate the length of the separating plate 31.

Referring still to FIG. 4, the separating plate 31 is extended rearward to a rear end of the inner space of the zipper slide 30 to form a closing end 312 for elongating its length so that an interval between the separating plate 31 and the top plate 34 is tapered rearward, i.e. the height of the upper guiding slot 32 is reduced rearward to the rear end of the inner space of the zipper slide 30. Thereby, the height of the upper guiding slot 32 (i.e. the interval between the separating plate 31 and the top plate 34) is fit to tightly guide the first sealing groove 211 to exactly slide therethrough so that the closing end 312 prevents from forming a leakage pathway at a communicating portion of the upper and lower guiding slots 32,33 to avoid leakage from the lower guiding slot 33 through the upper guiding slot 32 to the outer surface of the zipper slide 30. Moreover, to seal a clearance defined between the lower guiding slot 33 and the second sealing groove 221, the separating plate 31 is extended rearward to control an interval between a bottom plate 36 and the closing end 312 of the zipper slide 30, which must be just fit to exactly guide the second sealing groove 221 to tightly slide therethrough for ensuring the sealing effect of the lower guiding slot 33 and the second sealing groove 221.

Referring now to FIGS. 5 and 6, the zipper slide 30 mounted on a pair of sealing tapes 20 according to the first embodiment of the present invention is illustrated. The sealing tape 20 comprises a first sealing tape 21 having a first sealing groove 211 and a second sealing tape 22 having a second sealing groove 221. In assembling, the first sealing groove 211 of the first sealing tape 21 inserts into the upper guiding slot 32 of the zipper slide 30 while the second sealing groove 221 of the second sealing tape 22 inserts into the lower guiding slot 33 thereof. In use, the tab 35 is pulled to shift the zipper slide 30 forward and close to an end 201 of the sealing tape 20 so that the first and second sealing grooves 211,221 are connected with each other by the zipper slide 30. The sealing end 311 extended from the separating plate 31 of the zipper slide 30 of the present invention is fit to insert into a slit 23 defined between the first and second sealing grooves 211,221 (as shown in FIG. 3) while maintaining the tight contact between the separating plate 31 and the first and second sealing grooves 211,221 for the purpose of sealing and minimizing the slit 23 to prevent any leakage therethrough.

In another aspect, the interval between the closing 312 and the top plate 34 is fit to guide the first sealing groove 211 to tightly slide therethrough so as to prevent any leakage from the lower guiding slot 33 through the upper guiding slot 32 to the outer surface of the zipper slide 30. As describe above, the zipper slide 30 of the present invention can be mounted on conventional sealing tapes of a sealing bag (not shown) or other sealing device for the purpose of ensuring the sealing effect thereof.

Referring now to FIGS. 7 and 8, a zipper slide 30 according to a second preferred embodiment of the present invention is illustrated. As shown, the top plate 34 and the bottom plate 36 of the zipper slide 30 are further extended forward so that a front end of the top plate 34 and a front end of the bottom plate 36 are close to the sealing end 311 which is still projected forward between the top plate 34 and the bottom plate 36. Thus, the first sealing tape 21 inserting into a front end of the upper guiding slot 32 will be pressed downward by the top plate 34 while the second sealing tape 22 inserting into a front end of the lower guiding slot 33 will be pressed upward by the bottom plate 36. It results in that the slit 23 (as shown in FIG. 3) defined between the first sealing tape 21 and the second sealing tape 22 can be reduced by a pressing force of the top plate 34 and the bottom plate 36 extended forward from the zipper slide 30 of the present invention. Meanwhile, the sealing end 311 is easier to insert into the slit 23 without backward return of the slide zipper 30 so as to precisely position the slide zipper 30 in a predetermined point on the sealing tapes 20 and to increase the sealing reliability between the slide zipper 30 and the sealing tapes 20.

Referring now to FIG. 9, a zipper slide 30 according to a third preferred embodiment of the present invention is illustrated. To fit a slit configuration (i.e. the slit 23 as shown in FIG. 3), the triangle cross-section of the sealing end 311 of the separating plate 31 is preferably selected from an isosceles-triangle cross-section or an equilateral-triangle cross-section which has two equilateral sides with an arc configuration, but not limit to such configuration, so as to increase the sealing reliability between the slide zipper 30 and the sealing tapes 20.

The present invention has been described with a preferred embodiment thereof and it is understood that many changes and modifications in the described embodiment can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims. 

What is claimed is:
 1. An airtight slider structure for a zipper, comprising: a separating blade that divides an internal space of the slider into an upper guiding groove and a lower guiding groove, wherein the upper guiding groove and the lower guiding groove are joined at the inner space behind the slider so that a first zipper groove and a second zipper groove of the zipper engage with each other; a top tab disposed above the upper guiding groove, and a puller disposed directly on the top tab; a bottom tab disposed underneath the lower guiding groove, a frontal side of the separating blade extended toward a frontal edge of the slider to form a sealing end that is shaped as a slanted triangle, wherein the sealing end can be fitted tightly into a space formed between the first zipper groove and the second zipper groove.
 2. An airtight slider structure for a zipper, comprising: a separating blade that divides an internal space of the slider into an upper guiding groove and a lower guiding groove, wherein the upper guiding groove and the lower guiding groove are joined at the inner space behind the slider so that a first zipper groove and a second zipper groove of the zipper engage with each other; a top tab disposed above the upper guiding groove, and a puller disposed directly on the top tab; a bottom tab disposed underneath the lower guiding groove, a frontal side of the separating blade extended toward a frontal edge of the slider to form a sealing end that is shaped as a slanted triangle, wherein the sealing end can be fitted tightly into a space formed between the first zipper groove and the second zipper groove, the separating blade extended backwards to form an airproof end, a height between the airproof end and the top tab allowing only the first zipper groove to slide therethrough, so that an upper surface of the first zipper groove is directly underneath the top tab while a lower surface of the first zipper groove is directly above the separating blade such that there is no space left therebetween.
 3. The airtight slider structure for the zipper of claim 2, wherein a space is formed between the airproof end and the bottom tab, and a height of the space can allow only the second zipper groove to slide therethrough, so that an upper surface of the second zipper groove is directly underneath the separating blade, and a lower surface of the second zipper groove is directly above the bottom tab, such that there is no space left therebetween.
 4. An airtight slider structure for a zipper, comprising: a separating blade that divides an internal space of the slider into an upper guiding groove and a lower guiding groove, wherein the upper guiding groove and the lower guiding groove are joined at the inner space behind the slider so that a first zipper groove and a second zipper groove of the zipper engage with each other; a top tab disposed above the upper guiding groove, and a puller disposed directly on the top tab; a bottom tab disposed underneath the lower guiding groove, a frontal side of the separating blade extended toward a frontal edge of the slider to form a sealing end that is shaped as a slanted triangle, wherein the sealing end can be fitted tightly into a space formed between the first zipper groove and the second zipper groove while the top tab and the bottom tab are both extended toward a frontal edge of the slider and close to a frontal edge of the sealing end. 